Reddit reviews KUNCAN 5ft USB 5v to DC 12v Step Up Converter Cable, USB Port Voltage Converter to DC 5.5 x 2.1mm Connector
We found 10 Reddit comments about KUNCAN 5ft USB 5v to DC 12v Step Up Converter Cable, USB Port Voltage Converter to DC 5.5 x 2.1mm Connector. Here are the top ones, ranked by their Reddit score.
【Product Specification】: USB Input: 5v 2A; DC connector Output: 12v 0.7Amax. DC jack: 5.5 x 2.1 mm. DC cable length: 5ft (1.5m).【Feature】: This USB step up cable is convert power from 5v to 12v. Supply power from power bank to 12v devices. The part of PCB board is molded by PVC which is hard to damage. [ PLEASE NOTE: this convert cable only suit for the DC plug 5.5 x 2.1mm. NOT other size. Please check your device about it before purchase.]【Safety Design】: BUILD-IN IDENTIFICATION RESISTOR; Reverse polarity protection, over current protection, over temperature protection, short circuit protection. A smart design for protecting your device from damage.【Multiple Application】: Use in 5v power source, such as power bank, solar panel, battery pack etc. Charge for your 12v devices with dc 2.1 x 5.5 mm connector, such as: camera, router, stepper motor, desk lamp, speakers, blue tooth headset, mini fan, LED colorful light and other 12v devices.【What You Will Get】: 1 pcs USB convert cable √; 18 months warranty √; 24 hours passionate customer service √; 30 days freely return and exchange √. Any question, please feel free to contact us first, we will support you the best customer help.
Got it for bias lighting when using my computer at night, I got it in warm white because I use F.Lux to change the color temperature of my screen to warm white. I still need to get a switch because it stays on even with my computer off. I already had the voltage converter laying around, otherwise I would have gotten a 5-volt led strip.
Product links:
LED Strip ($2.88)
Voltage converter ($11.99)
I use this KUNCAN Dc 5v to Dc 12v Converter Step Up Voltage Converter Adapter Black Regulator From Power Bank 6.5ft Am to Dc 5.5*2.1mm.
Run it off a varriety of power pack for hours. I got the electrical department to do some testing and light house dont use close to 2 amp draw, actually the power usage flitters as the beacon pulses.
https://www.amazon.co.uk/gp/aw/d/B01ID90K4A/ref=mp_s_a_1_4?ie=UTF8&qid=1492283242&sr=8-4&pi=AC_SX236_SY340_FMwebp_QL65&keywords=5v+usb+to+12v&dpPl=1&dpID=41Ke4FpPrjL&ref=plSrch
You need this. And a high amperage usb power supply
KUNCAN 5ft Dc 5v to Dc 12v Converter Step Up Voltage Converter to Dc 5.5 x 2.1mm https://www.amazon.com/dp/B01ID90K4A/ref=cm_sw_r_cp_apa_i_NyA.Ab7JFJMHW
the ones that fail like you describe are the ones that have voltage steppers and capacitance, this generic USB cable in the post is fine.
I found a step up voltage converter that fits your needs. USB ports are only specified to output 1 amp at 5 volts. I don't know how much this device will draw to power your fan. As far as the connectors go, just cut them off.
https://www.amazon.com/KUNCAN-Converter-Step-Voltage-2-1mm/dp/B01ID90K4A/ref=sr_1_7?ie=UTF8&qid=1492185690&sr=8-7&keywords=5%2Bto%2B12%2Bvolt%2Bconverter&th=1
Edit: Oh, and be sure that the power supply that is powering the Pi has enough extra power to power this thing
Welp, it is currently working perfectly over just USB using this: https://www.amazon.com/gp/product/B01ID90K4A/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1
No issues at all yet for 6 hours playtime.
This is what I use for my BMPCC: https://www.amazon.com/gp/product/B01ID90K4A/ref=oh_aui_detailpage_o05_s00?ie=UTF8&psc=1. I plug this into an Anker battery pack (one that would usually charge a smartphone or tablet) and the converter converts the battery pack's output voltage from 5V to 12V. Basically what this is doing is charging your LP-E6 battery continuously while shooting.
It already seemed more technical and EEing than I thought I could handle. My computer has additional USB 2.0 ports and I found something that can increase the voltage from 5V to 12V at the cost of Amps and I looked the specs up for the LCD screen (page 6) and it looks as the max draw is under the 1amp max the step up cable can provide. So I will only need to plug one thing into the wall (my laptop cable) instead of two but have the same number of wires. Does that seem like it would work?
Here is the battery pack. The pack should put out 5v 3amps per USB unless I've misread, however this product and ones like it tend to convert 5v power from USB to 0.8amp max output at 12v DC, but the fan should require 1.2amp of 12v DC to run on low.
Edit: I located some testing on a similar product in a review that might be helpful:
This seems to do fairly well though I'm unclear what they think their ratings are. I connected this to a 60-watt 5V Anker 6-port USB power strip (which I have verified is better than 5% tolerance 5V at 2.8A on a single port) and began to take measurements.
Max power without total shutting down:
Input 5.08V at 1.9A
Output 10.01V at 818mA
---- Or slightly closer to 12V ----
Input 5.08V at 1.86A
Output 11.33V at 708mA
Max power stable long-term:
Input 5.03V at 1.86A
Output 11.62V at 675mA
Duration - 20 minutes stable, immediately following max-power test
This suggests that this 12V adapter will reasonably provide continuous output at 12V around 670mA with the capability to have higher surge-current but at the cost of dropping more voltage. I was very pleased with how cool it ran - only slightly warm to the touch (113F on the plastic case as measured on IR thermometer). In the event of an overload it does seem to fail gracefully and "shut down" the converter (outputting about 4.5V until reset) on severe overload then "resets" if it is unplugged for a couple minutes.
KUNCAN Dc 5v to Dc 12v Converter Step Up Voltage Converter 5ft Am to Dc5.52.1mm https://www.amazon.com/dp/B01ID90K4A/ref=cm_sw_r_cp_apap_5lKFN3PKiScfq